AST 248
What is Science?
“In the space of one hundred and seventy-six years the
Lower Mississippi has shortened itself two hundred and fortytwo miles. That is an average of a trifle over one mile and a
third per year. Therefore, any calm person, who is not blind or
idiotic, can see that in the Old Silurian Period, just a million
years ago next November, the Lower Mississippi River was
upwards of one million three hundred thousand miles long,
and stuck out over the Gulf of Mexico like a fishing rod. And
by the same token any person can see that seven hundred
and forty-two years from now the Lower Mississippi will be
only a mile and three quarters long, and Cairo and New
Orleans will have joined their streets together, and be
plodding comfortably along under a single mayor and a
mutual board of aldermen.
There is something fascinating about science. One gets
such wholesale returns of conjecture out of such a
trifling investment of fact.”
from Life on the Mississippi, by Mark Twain
Question Authority
Question Authority
They Don’t Know
Either
What Science Is
Science is a process by which we
investigate our world.
– Science is not a litany of facts.
– Science employs the technique of
objective materialism. This means that
science is limited to seeking natural laws
and processes to explain the world.
Thales (c. 600 BCE) is considered the
first scientist.
He postulated that
there must be an underlying order to
the universe, subject to rational
inquiry, accessible by observation
What Science Is Not
Science is not
• Dogmatic
• Authoritative
• Mysterious
Supernatural explanations are not science.
What Science Is
Scientific explanations must be
• Testable, and
• Falsifiable
• Science is self-correcting
• Knowledge is cumulative
• Science is an evolving process.
• We recognize that we do not know
everything, but that we are learning.
• As we learn, facts or observations that we
cannot now explain may become explicable.
Definitions
• Fact: what we observe.
• Law: a descriptive generalization of facts,
such as the law of gravity.
• Theory: An explanation for the laws and
facts.
– Must have predictive power
– The theory is the pinnacle of science.
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SCIENTIFIC METHOD / SCIENCE & EXPLORATION
So, why does
science scare
people?
Ohio lawmakers want to limit the teaching
of the scientific process
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The Ohio Statehouse in Columbus.
Joseph
Science educators have recognized that teaching science as a large compendium of facts, without
reference to the scientific process and theories that bind them together, simply leads to uninterested
and uninformed students. So it's a bit mind-boggling to discover that an Ohio state legislator is
attempting to block educators from teaching anything about the scientific process. And for good
measure, the bill's sponsor threw politics and creationism into the mix.
Arstechnica.com
26 August 2014
The bill, currently under consideration by the Ohio Assembly, is intended to revoke a previous approval
of the Common Core educational standards, which target math and literacy. However, the bill's
language also includes sections devoted to science and social studies. And the science one is a real
winner:
The same One M8 that ran Android now runs
Windows Phone, exclusively on Verizon.
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BANNING BANS
The standards in science shall be based in core existing disciplines of biology, chemistry, and
physics; incorporate grade-level mathematics and be referenced to the mathematics standards;
focus on academic and scientific knowledge rather than scientific processes; and prohibit
political or religious interpretation of scientific facts in favor of another.
Specifically prohibiting a discussion of the scientific process is a recipe for educational chaos. To begin
with, it leaves the knowledge the kids will still receive—the things we have learned through science
—completely unmoored from any indication of how that knowledge was generated or whether it's likely
to be reliable. The scientific process is also useful in that it can help people understand the world
around them and the information they're bombarded with; it can also help people assess the reliability
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A Rube Goldberg Device
Occam’s Razor
• Pluralitas non est ponenda sine neccesitate (William of Occam)
(Entities should not be multiplied unnecessarily)
• Nature operates in the shortest way possible (Aristotle)
• We are to admit no more causes of natural things than such as
are both true and sufficient to explain their appearances (I.
Newton)
• Everything should be made as simple as possible, but not simpler
(A. Einstein)
• If two theories explain the data equally well, the simpler theory is
generally preferable
Or: Never attribute to malice that which can be attributed to stupidity
The KISS principle: Keep it simple, stupid!